Mathematics · Set Theory
Which of the following statements is INCORRECT for sets X and Y, where φ denotes the null set and Y' denotes the complement of set Y?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1X - Y = X ∩ Y'
- 2If X ∩ Y = φ, then X - Y ≠ X✓
- 3The complement of a Universal set is a null set
- 4The intersection of two disjoint sets is a null set
Correct answer
If X ∩ Y = φ, then X - Y ≠ X
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